webpack.common.js

/* eslint-disable no-var, strict, prefer-arrow-callback */
'use strict';

let HardSourceWebpackPlugin = require('hard-source-webpack-plugin');
let Dotenv = require('dotenv-webpack');

let packageJson = require('./package.json');
let vendorDependencies = Object.keys(packageJson['dependencies']);

module.exports = {
    entry: {
        main: ['babel-polyfill', "./src/eterna/index.ts"],
        vendor: vendorDependencies
    },

    output: {
        filename: '[name].js',
        chunkFilename: '[chunkhash].js'
    },

    resolve: {
        // Add '.ts' and '.tsx' as resolvable extensions.
        extensions: [".ts", ".tsx", ".js", ".json"]
    },

    module: {
        rules: [{
            // Include ts, tsx, and js files.
            test: /\.(tsx?)|(js)$/,
            exclude: /node_modules/,
            loader: 'babel-loader',
            options: {
                cacheDirectory: true
            }
        }],
    },

    // When importing a module whose path matches one of the following, just
    // assume a corresponding global variable exists and use that instead.
    // This is important because it allows us to avoid bundling all of our
    // dependencies, which allows browsers to cache those libraries between builds.
    externals: {
        // "react": "React",
        // "react-dom": "ReactDOM"
    },

    // 5/15/18 - Cargo-culting this line in to fix 'Module not found: Error: Can't resolve 'fs''
    // https://github.com/webpack-contrib/css-loader/issues/447
    node: {
        fs: "empty"
    },

    plugins: [
        // Caching plugin for faster builds
        // https://github.com/mzgoddard/hard-source-webpack-plugin
        new HardSourceWebpackPlugin(),

        // Access .env values
        // https://github.com/mrsteele/dotenv-webpack
        new Dotenv({
            safe: true, // load '.env.example' to verify the '.env' variables are all set. Can also be a string to a different file.
            systemvars: true, // load all the predefined 'process.env' variables which will trump anything local per dotenv specs.
        })
    ]
};